Refrigerant Piping Work - Hitachi 3HRNM1Q Installation & Maintenance Manual

5.2

Refrigerant Piping Work

(1) Ensure that the directions for refrigerant piping work according to the tables.
Model
3HRNM1Q
4HRNM1Q
5HR(Y)NM1Q
Oil Trap is recommended
at every 10 meters lift
Indoor
Unit
Table 5.1 Limitation of Outdoor Unit
Outer Diameter and
Length
Piping Size (mm)
Gas
Indoor
Unit
Indoor Indoor
Unit Unit
Maximum Piping Length
Liquid
Actual Length
Actual Length
11
40
60
HP
0.8~1.5
1.8~2.0
2.3~6.0
I
3HRNM1Q
4HRNM1Q
5HR(Y)NM1Q
3HRNM1Q
4HRNM1Q
5HR(Y)NM1Q
3HRNM1Q
4HRNM1Q
5HR(Y)NM1Q
Applicable
Range
Within
Within
Within
Within
Within
Within
Within
Within
Within
Within
Within
Within